Brigade Quartermaster sells a sewing kit that makes the liner and poncho into a somewhat neater unit and combination sleeping bag. These are popular with people who think the mutually exclusive goals of lightwieght and useable insulation can be mated. In the real world it doesn't. That said, a liner has a salutory effect on the poncho's drape. In the high winds that often accompany rain it does help in that regard. With suitable layering there is some usefull insulation. I've found the tradeoffs merited just going for a full on system and live with the bulk and wieght. I'm still mourning a lost bid on EBAY. A british photojournalist had a huge Harry Potter like cape with detachable hood tailored in Turkey of austrian lodencloth. She even made provision for tent stakes to convert it into a small shelter. Sadly, somebody out there with more money and equal romanticism as I won it <img src="/images/graemlins/mad.gif" alt="" />